Unit+5+Developing+ideas+课件高中英语外研版（2019）选择性必修第四册

新外研社高中英语选择性必修四Unit5IntotheUnknown

DevelopingIdeasReadingPre-readingLookatthepictureandanswerthequestions.Dofurtherresearchifnecessary.Whatdifferentzonesarethereintheocean?Whichpartsoftheoceandoyouthinkhavebeenexplored?Whatdoyouknowaboutthedeepestpartoftheocean?ThedifferentzonesintheoceanareSunlightZone(阳光地带),TwilightZone(阴影区),MidnightZone(午夜区)andAbyssalZone(深海层).200m1000m6000m11000m0m≈20℃5-10℃0-4℃<0℃Weareenteringanewageofoceanicdiscovery.WehavelittleknowledgeofEarth’sseabed.Manyarchaeologicalfindsaremadeinshallowwaters.Thereareextraordinarycreaturesinthedeepsea.Theoceansareavaluablesourceofnaturalresources.While-readingReadformainideaSkimthepassageandmatchthemainidea.Para.5Para.1Para.2Para.3Para.4DivingdeepPara.1:Introducethetopic.Para.2-4:Ocean_________Para.2:the_______ofNeapolisPara.3:amazing_____________ discoveriesPara.5:_____________isenteringanewageof oceanicdiscovery.HumankindruinsPara.4:__________ofnatural resourcesbiologicaldiscoveryexplorationWhile-readingReadforstructureWhile-readingReadfordetailsScanthepassageandcompletethediagram.deepseaArchaeologicalshallowwatersvastdepthstheruinsofNeάpolisBiologicaltheplanet'sfishthecapacityforlifeonourplanetbone-whitecoralthebarreleyelifetobefoundevenaroundthedeep-seavolcanicopeningstheseabeddeep-seadrilling“fireice”China'sunderwatervesselsWhile-readingReadforwritingskills

Whatwritingskillsareusedinthepassage?Statistics&examplesThediscoursemarkers(语篇标记)While-readingstatisticsWhile-readingExamplesExamplesinpara.2wholecityburiedbeneaththewavesRomancityofNeapolislocation:___________________time:______________cause:______________offthecoastofTunisiatsunamithe4thcenturyWhile-readingExamplesExamplesinpara.3200metresdarkzone6000metresdeep8000metresName:_____________Age:_____________Name:_____________Features:_____________barreleyetransparentheadEyescanlookupwardslifetobefoundevenaroundthedeepseavocalnicopenings

bone-whitecoral4000yearsoldWhile-readingExamplesExamplesinpara.4China’sachievements:Newnaturalresource:__________Underwatervessels:___________________________fireiceJiaolong&ShenhaiYongshiTip:Theuseofstatisticsandexamplesmakethepassagemoreconvincing.While-readingdiscoursemarkersTip:

Thesemarkersfunctionlikeroadsigns,helpingyouconnectideasandunderstandthewriter'sattitudeandopinions.(P77)Post-readingThink&ShareWhatcommonmessagedothetworeadingpassagesinthisunitconvey?Howdotheyeachbuilduponthisidea?Bothpassagesconveythemessagethathumanshavethedesireandmeanstoexploretheunknown.Thefirstpassagedoesthisbylookingatourfascinationwithhistory’sgreatestmysteries,whilethesecondpassagelooksatpioneeringexplorationofEarth'soceans.Post-readingGroupworkWatch

thevideoclipof

programTidesofChangeandfinishthefollowingtask.Post-readingGroupwork“Creatingabetterlivelihood”isshowninthevideoclip,whichisalsooneofthepurposesofChina’soceanexploration.Pleaseintroducetheinfluenceofoceanexplorationonpeople’sdailylifefortheaudienceaccordingtothediagrambelow.(P77)Theairwebreathe:Theoceanproducesoverhalfoftheworld’soxygenandabsorbs50timesmorecarbondioxidethanouratmosphere.Climateregulation:Covering70percentoftheEarth’ssurface,theoceantransportsheatfromtheequatortothepoles,regulatingourclimateandweatherpatterns.Food:Theoceanprovidesmorethanjustseafood;ingredientsfromtheseaarefoundinsurprisingfoodssuchaspeanutbutterandsoymilk.Medicine:Manymedicinalproductscomefromtheocean,includingingredientsthathelpfightcancer,arthritis,Alzheimer’sdisease,andheartdisease.Recreation:Fromfishingtoboatingtokayakingandwhalewatching,theoceanprovidesuswithmanyuniqueactivities.LanguagePoints1.Lyingunderwatersacrosstheglobeareanestimated

threemillionshipwrecks.Allofthemrepresent

attemptsoverthecenturiestoexploreEarth'sfurthest

corners.AmongtheseistheEsmeralda,theearliest

wreckfromtheageoftheEuropeanexplorationof

Asia.Today,some500yearsaftertheEsmeraldaset

sail,thereislttle-ifany-landonourplanetleft

unexplored.WehavemoredetailedmapsoftheMoon,

andevenofVenusandMars,thanwedoofEarth's

ownseabed.全球水域下大约沉睡着三百万艘沉船残骸，每艘都代表了若干世纪以来探索地球最远端的努力尝试。其中就包括了“埃斯梅拉达”号，它是欧洲国家探索亚洲时代留下的最早残骸。如今，距离“埃斯梅拉达”号起航已有500多年，我们星球上尚未被人类探索的土地已经少之又少了。然而，我们手中关于地球自身海底的地图，甚至比不上关于月球乃至金星、火星的天体图详尽。2

Givenourlimitedknowledge,itisperhapsnosurprise

thatexplorationoftheoceanscontinuestoleadto

discoveriesinvariousscientificfields.AswiththediscoveryoftheEsmeralda,manyarchacologicalfinds

aremadeinshallowwatersnearthecoast.Thesemay

sometimesincludewholecitiesburiedbeneaththe

waves.OnesuchfindistheancientRomancityof

Neapolis,discoveredoffthecoastofTunisia.基于我们有限的认知，探索海洋可以带来许多科学领域的新发现，这也许就显得不足为奇了。就像发现“埃斯梅拉达”号的残骸一样，很多考古学发现都发生在近海岸的浅水水域。这些发现有时会包括埋在海浪下的整座城市，其中之一便是在突尼斯近海发现的古罗马城市奈阿波利斯。2

Believed

tohavebeenburiedunderwaterbyatsunamiinthe

fourthcenturyAD,theruinsofNaipolisarealmost

2,000yearsold.Theremainingstreetsandbuildings

offerawindowintoafascinatingperiodinourhistory.

However,weareonlybeginningtoovercomethe

challengesofpressure,darknessandextremecoldat

vastdepths.Fragmentsofthepastlyingdeepbeneath

theoceansarestillwaitingtobediscovered.据悉，在公元4世纪，奈阿波利斯被-场海啸淹没，其废墟至今已有近2,000年的历史。存留下来的街道、建筑为我们打开了一扇窗，让我们得以窥见那段精彩的历史。然而，我们才刚刚开始克服广袤的海洋深处的压强、黑暗和极寒所带来的挑战。过去的碎片仍深藏在大洋底部，等待被发现。3.Amazingbiologicaldiscoveriesarealsobeingmade.Thedarkzonesoftheoceansmaycontainupto

90percentoftheplanet'sfish.Inthesewaters,more

than200metresdeep,wherelightcannotreach,areextraordinarycreaturesthat

appearasiftheyarestraightoutofsciencefiction.Imaginebonewhitecoral6,000

metresbelowtheocean'ssurface,growingattherateofonlyoneortwomillimetres

peryear.Someofthesecouldbe4,000yearsold.生物学领域也有惊人的发现。海洋的黑暗区域里或许生存着多达地球上90%的鱼类。在200多米以下、阳光照不到的深水水域里，住着一些看起来就像是刚从科幻小说中走出来的奇异的生物。想象一下，在海平面下6,000米深处，骨白色的珊瑚以每年仅一到两毫米的速度缓慢生长着，它们中有些已经存活了4,000年。3.

Swimmingthroughtheseblack

depthsisthebarreleye,astrangefishwitheyesthatcanlookupwardsthroughits

transparentforehead.Intheverydeepestoceantrenchesthataremorethan8,000

metresbelowthesurface,thepressureisequivalentto50aeroplanesstackedone

ontopofanother.Yetthereisstilllifetobefound,evenaroundthedeep-sea

volanicopenings.Thesediscoveriesallhelpusunderstandthecapacityforlifeonourplanet,eveninthemostextremecircumstances.漆黑的深海里管眼鱼游来游去，这是种奇特的鱼,其眼睛可以透过透明的前额向.上看。在海平面以下8,000多米处最深的海沟里，压强相当于50架飞机堆蠱在--起，然而这里仍有生命的存在，甚至在深海海底的火山口周围也有生命。这些深海发现帮助我们理解地球上生命的承受力，甚至是在最极端的环境下的承受力。4

Furthermore,theoceansareavaluablesourceofnaturalresources,someof

whicharecompletelynewtous.MostnotableoftheseisChina'sdiscovery

ofanice-likesubstance,knownas“fireice",undertheSouthChinaSea.

Inaddition,China'sunderwatervessels,suchastheJiaolongandSbenhai

Yonrgsbi,havebeenexploringwatersatdepthsofthousandsofmetres.

此外，海洋还包含着珍贵的自然资源，其中一些对我们来说完全是新的资源。最值得一提的便是中国在南海发现的冰状物质一一可燃冰。此外，中国的水下舰艇如“蛟龙”号和“深海勇士”号，一直在数千米深的水域探索。4

TheJiaolongevenholdstherecordforthedeepestdivebyamanned

submarine,at7,062metres,givingChinaitsplacealongsidetheworld'stopoceanexplorers.Theresearchconductedbythese

vesselsisgivingscientistsagreaterunderstandingofhowthe

seabedwasformed,aswellashelpingidentifyareasfor

deep-seadrilling,takingdeepseaexplorationintoa

wholenewera.“蛟龙”号甚至创造了载人潜舰的最深下潜纪录7,062米，使中国跻身于世界顶级海洋探索国之列。借助这些潜水器所完成的研究有利于科学家进一步了解海床的形成过程，帮助确定深海钻探区域，将深海勘探带入一个崭新的时代。5

Beingatoughenvironmentofcomplete

darkness,enormouspressureandintense

cold,theoceandepthshavelong

beenbeyondthereachofhuman

exploration.However,through

dloserinternationalscientific,

economicandcultural

cooperation,weareall

becomingpartofaglobal

missiontoopenupour

planet'sfinalfronter.

Humankindisentering

anewageofoceanic

discovery,andtheworld

beneaththewavesmay

onedaybealmostas

familiartousasthe

landwewalk

upontoday.深海区域环境恶劣，完全黑暗、压强极大、极度寒冷，长期以来都是人类探索无法企及的区域。然而，通过更紧密的国际科学、经济以及文化合作，我们都在成为开拓地球最后疆域这一全球使命的参与者。人类正走向海洋发现的新时代，或许有朝一日，我们会像熟悉脚下的土地一样熟悉那海浪下的世界。

Today,some500yearsaftertheEsmeraldasetsail,thereislittle—ifany—landonourplanetleftunexplored.句意：今天，在“埃斯梅拉达”号起航约500年后，我们的星球上几乎没有未被探索过的陆地。1Doyoulikecollectingthings?Ifso,what?

你喜欢收集东西吗？如果喜欢的话，你喜欢收集什

么？Ifpossiblekeepasparepairofglassesaccessibleincaseyourmainpairisbrokenorlost.

如果有可能的话，最好准备一副备用眼镜，以防常

用的那副眼镜被打碎或丢失。Thescholarseldom,ifever,goestotheopera.

这个学者很少去看歌剧。________(如果这样的话),youhavetosufferfromgreatpressure.____________(如果有必要),hewilldesignanothernewadvertisement.本句中ifany为一种省略形式，补充完整是ifthereisany表示“如果有的话”。某些句式经过长期发展已成为固定搭配：ifpossible如果可能的话ifonly要是……就好了ifever如果有过的话ifnot如果不的话Whatif...?如果……怎么办？Whynot?为什么不呢？Whatfor?为什么？when/wherenecessary

必要的时候/地方IfsoIfnecessary

Givenourlimitedknowledge,itisperhapsnosurprisethatexplorationoftheoceanscontinuestoleadtodiscoveriesinvariousscientificfields.句意：考虑到我们有限的知识，对海洋的探索继续导致各种科学领域的发现也许并不奇怪。2Judgingfromhisaccent,heisfromHongKong.

从口音判断，他来自香港。Consideringyourhealth,you’dbetterhavearest.

考虑到你的健康，你最好休息一下。Totellyouthetruth,I’mnotsointerestedinthereligiousmatter.

跟你说实话，我对这件宗教事情的兴趣不大。本句为given引导的介词短语作状语，given还可作连词后面跟句子。英语中常见的独立成分还有：supposing/assuming/providing/provided(that...)

假如/如果

judgingfrom...根据……判断

Generallyspeaking...一般说来Franklyspeaking...坦白地说【语法填空】________(give)thatthey’reinexperienced,they’vedoneagoodjob.___________(assume)thatyouarechosentobeavolunteerattheOlympicGames,whatwillyoudo?________(see)thatyouhavenotime,IhavePeterreplaceyou.Frankly_______,I’mnottookeenonthismeal,either.GivenAssumingSeeingspeaking3.Swimmingthroughtheseblackdepthsisthebarreleye,astrangefishwitheyesthatcanlookupwardsthroughitstransparentforehead.

3句意：在这些黑色的深处游动的是管眼鱼，这是一种奇怪的鱼，它的眼睛可以通过透明的前额向上看。句子结构分析that引导定语从句分词短语引导完全倒装句4.Intheverydeepestoceantrenchesthataremorethan8,000metresbelowthesurface,thepressureisequivalentto50aeroplanesstackedoneontopofanother.

3句意：在海面以下8000多米的最深海沟中，其压力相当于50架飞机叠在一起的压力。句子结构分析非谓语动词作定语that引导的定语从句

Beingatoughenvironmentofcompletedarkness,enormouspressureandintensecold,theoceandepthshavelongbeenbeyondthereachofhumanexploration.

句意：海洋深处环境恶劣，一片漆黑，压力巨大，温度极低，长期以来都是人类无法探索的。5TheWestLakewasbeautifulbeyonddescription.

西湖美得难以描述。Ihonourhimbeyondexpression.

我对他佩服得无法表达。Ourqualityisfarbeyondcomparison.

我们的质量是无与伦比的。beyondone’sreach够不着

beyondrecognition认不出来，无法辨认beyondquestion毫无疑问的（地），确实的（地）Ifindhisbehaviour_______________.

我发觉他的作为令人难以置信。Thechildrenwere_________________.

这些孩子不听管教。Theplaywasdull__________________.

这出戏沉闷得无法相容。Ifeelasenseofsatisfactionandgratitude_______________________.我感到说不出的满足和感激。【选词填空】beyondcontrol无法控制，失去控制beyondone’spower力所不及

beyondexpectation出乎意料

beyondexpression难以表达

beyondone’scapacity超出某人能力

beyondbeliefbeyondcontrolbeyonddescriptionbeyondexpressionWritingPre-writingAlongaspeciallineoflatitude,knownasthe30thparallelnorth,lienumeroussitesofancientcivilisationsandimpressivenaturalfeatures.n.纬度

Readthemagazinearticleandanswerthequestions.Pre-writingAncientcivilisationsappearedontheparallel,includingBabylon,withitsfamoustower;Egypt,withitspyramids;China,withitsSanxingduiculture,etc.Thesecivilisationsappearedatasimilartime,andalldevelopedadvancedbronze-makingtechniques.Weretheypartofasinglesuper-civilisation,assomethink?青铜制造技术Readthemagazinearticleandanswerthequestions.Pre-writingIt’sarguedthatthe30thparallelnorthisalineofgreatnaturalenergy,withfrequentearthquakesandvolcaniceruptions.Thiscreatesamazingnaturalfeatures,includingMountQomolangma,theDeadSea,andrivers,suchastheNile,theMississippiandtheYangtze.Lackinganyconcreteevidence.someevenclaimitwassupernaturalpowers!具体的证据Readthemagazinearticleandanswerthequestions.Pre-writingScientists,however,disputethesetheories.It’smorelikely,theyargue,thatcivilisationsaroseonthe30thparallelnorthbecausetheclimatethereisgenerallywarmandwet.Majortectonicplatesmeetatthislatitude,causingearthquakes,whichhelpedformtheHimalayas.Therest,theysay,iseithercoincidenceorfantasy.v.对……表示质疑（地球表面的）构造板块Readthemagazinearticleandanswerthequestions.1.Whyisthe30thparallelnorthmysterious?The30thparallelnorthismysteriousbecauseitiswherenumeroussitesofancientcivilisationsandimpressivenaturalfeatureslie.Pre-writingReadthemagazinearticleandanswerthequestions.2.Whataresomeunusualexplanationsforit?Somebelievethatthe30thparallelnorthisalineofgreatnaturalenergy,withfrequentearthquakesandvolcaniceruptions,andothersevenclaimthatitsamazingnaturalfeatureswerecausedbysupernaturalpowers.Pre-writingReadthemagazinearticleandanswerthequestions.3.Whataresomepossiblescientificexplanations?Pre-writingReadthemagazinearticleandanswerthequestions.Possiblescientificexplanationsforthe30thparallelnorthincludethegenerallywarmandwetclimatethatmadeitagoodplaceforcivilisationstodevelop,andthefactthatitiswheremajortectonicplatesmeet.Whatdoesanarticleaboutanunexplainedphenomenonusuallyinclude?Pre-writinganarticleaboutanunexplainedphenomenonwhattheunexplainedphenomenonis.thereasonswhyitismysterious.non-scientificexplanationsaboutit.scientificexplanationsaboutit.Haveyouheardof

theBermudaTriangle?Tellsomethingaboutit.While-writingPlananarticleaboutanunexplainedphenomenon.Dofurtherresearchifnecessary.While-writingWhatistheunexplainedphenomenon?Whyisitmysterious?Whatnon-scientificexplanationsarethere?Howdoscientistsexplainit?Plananarticleaboutanunexplainedphenomenon.Dofurtherresearchifnecessary.While-writingWhatistheunexplainedphenomenon?FarbelowthesurfaceoftheNorthAtlanticOcean,inaroughlytriangularareaknownastheBermudaTriangle,liemorethan50shipwrecksand20planewrecks.While-writingWhyisitmysterious?Whatmakesthesewreckssomysteriousisthatthecauseoftheirfateremainslargelyunknown–shipswereabandonedwithoutapparentreason,distresssignalswereneversentandaircraftwerelostwithouttrace.Plananarticleaboutanunexplainedphenomenon.Dofurtherresearchifnecessary.While-writingWhatnon-scientificexplanationsarethere?Somebelievethatsupernaturalforcesareresponsible,whileothersputtheaccidentsanddisappearancesdowntocoincidence.Plananarticleaboutanunexplainedphenomenon.Dofurtherresearchifnecessary.While-writingHowdoscientistsexplainit?Scientifictheories,meanwhile,includepiloterrorwhentryingto